Recently we started to use Adobe Reader 2015 and DC. Also we have proxy server with proxy.pac settings in IE. After launching Adobe Reader 2015 or DC proxy pop-up window appear with asking credentials. We tryed to get rid of it with registry values such as:

!

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Acrobat Reader\2015\FeatureLockDown\cServices]

"bToggleWebConnectors"=dword:00000001

"bUpdater"=dword:00000000

"bToggleAdobeDocumentServices"=dword:00000001

" bToggleAdobeSign"=dword:00000001

"bToggleFillSign"=dword:00000001

"bToggleSendAndTrack"=dword:00000001

"bTogglePrefsSync"=dword:00000001

"bAdobeSendPluginToggle"=dword:00000001

Also with firewall rules. But it still appears. How can get rid of it finally?